MAINTENANCE - Air Dryer Maintenance maintenance procedures are not going to keep the transmission running or assure long transmission life. Transmission internal parts are amply lubricated if these procedures are closely followed: 1. Maintain lubricant level and inspect regularly. 2. Follow maintenance intervals, see Transmission Lubrication Change Intervals on page 33. 3. Use the correct grade and type of lubricant, see PACCAR Transmission Lube Specification on page 37. 4. Buy lubricant from an approved dealer. of the lubricant and affect component performance. When switching between types of lubricants, all areas of each affected component must be thoroughly flushed.
Air Dryer Maintenance Vehicles equiped with a PACCAR Transmission will have an air dryer fitted with an oil-coalescing desiccant cartride. This air dryer cartridge must be replaced every 1 year regardless of mileage. 3 NOTE For a list of Approved Synthetic Lubri- cants, see vehicle operator manual. CAUTION Replace oil-coalescing desiccant air dryer cartridge every 1 year regardless of mileage. Only use oil-coalescing desiccant replacement cartridge when replacing. Failure to perform this main- tenance task will void the PACCAR Transmission warranty and may result in expensive transmission damage. NOTE Additives and friction modifiers must not be introduced.
Mixing of Oil Types Proper Transmission Lubrication Level Make sure the transmission lubricant is level with the bottom of the fill opening. Being able to reach the lubricant with your finger does not mean the lubricant is at the proper level. CAUTION Proper Transmission Lubrication Do not mix engine and gear oil in the same transmission. Mixing engine and gear oils could cause damage to the transmission. Proper lubrication procedures are key to a good all-around maintenance program. If the lubricant is not doing its job or if the lubricant level is ignored, all other Engine oils and gear oils may not be compatible; mixing can cause breakdown 32 Y53-1272-1B1 (08/17)